TY - JOUR T1 - The Wave Motion of a Revolving Shaft, and a Suggestion as to the Angular Momentum in a Beam of Circularly Polarised Light JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 82 IS - 557 SP - 560 EP - 567 PY - 1909/07/31/ UR - http://dx.doi.org/10.1098/rspa.1909.0060 M3 - doi:10.1098/rspa.1909.0060 AU - Poynting, J. ER -